Equity - Schedule of Other Comprehensive Income (Loss) Reclassification Adjustments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Comprehensive Income (Loss) Reclassification Adjustments
Other comprehensive income (loss)	$ 1,847	$ (4,918)	$ 7,484	$ (2,743)
Noncontrolling interests
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	1,967	(5,934)	217	(4,113)
Less: Reclassification adjustments included in net income	(92)	(169)	(7,591)	(979)
Total other comprehensive income (loss), before of income tax expense (benefit)	2,059	(5,765)	7,808	(3,134)
Less: Income tax expense (benefit)	212	(847)	324	(391)
Unrealized Appreciation (Depreciation) of Fixed Maturity Securities on Which Allowance for Credit Losses Was Taken
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	45	(80)	98	10
Less: Reclassification adjustments included in net income	0	0	(42)	(23)
Total other comprehensive income (loss), before of income tax expense (benefit)	45	(80)	140	33
Less: Income tax expense (benefit)	8	(14)	20	9
Other comprehensive income (loss)	37	(66)	120	24
Unrealized Appreciation (Depreciation) of All Other Investments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	1,514	(6,998)	(1,129)	(5,171)
Less: Reclassification adjustments included in net income	(84)	(163)	(8,867)	(933)
Total other comprehensive income (loss), before of income tax expense (benefit)	1,598	(6,835)	7,738	(4,238)
Less: Income tax expense (benefit)	249	(1,141)	92	(798)
Other comprehensive income (loss)	1,349	(5,694)	7,646	(3,440)
Change in Fair Value of Market Risk Benefits Attributable to Changes in Our Own Credit Risk
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	0	(104)	130	(250)
Less: Reclassification adjustments included in net income	0	0	(330)	0
Total other comprehensive income (loss), before of income tax expense (benefit)	0	(104)	460	(250)
Less: Income tax expense (benefit)	0	(23)	28	(54)
Other comprehensive income (loss)	0	(81)	432	(196)
Change in the discount rates used to measure traditional and limited payment long-duration insurance contracts
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	(12)	1,470	947	1,474
Less: Reclassification adjustments included in net income	0	0	1,583	0
Total other comprehensive income (loss), before of income tax expense (benefit)	(12)	1,470	(636)	1,474
Less: Income tax expense (benefit)	(58)	323	166	374
Other comprehensive income (loss)	46	1,147	(802)	1,100
Foreign Currency Translation Adjustments
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	427	(279)	173	(323)
Less: Reclassification adjustments included in net income	0	0	88	0
Total other comprehensive income (loss), before of income tax expense (benefit)	427	(279)	85	(323)
Less: Income tax expense (benefit)	13	(10)	14	33
Other comprehensive income (loss)	414	(269)	71	(356)
Retirement Plan Liabilities Adjustment
Other Comprehensive Income (Loss) Reclassification Adjustments
Unrealized change arising during period	(7)	57	(2)	147
Less: Reclassification adjustments included in net income	(8)	(6)	(23)	(23)
Total other comprehensive income (loss), before of income tax expense (benefit)	1	63	21	170
Less: Income tax expense (benefit)	0	18	4	45
Other comprehensive income (loss)	$ 1	$ 45	$ 17	$ 125